Patents by Inventor Ryuta Teraya

Ryuta Teraya has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11440529
    Abstract: A controller includes an engine controlling section and a motor-generator controlling section. The controller is configured to use the engine controlling section and the motor-generator controlling section to execute an intermittent stop control, a temperature increase control, an intermittent stop prohibition control, and a motoring control. The intermittent stop control automatically stops and restarts operation of an internal combustion engine. The temperature increase control increases the temperature of a filter in the exhaust passage to a temperature at which PM can be burned. The intermittent stop prohibition control prohibits stop of the operation of the internal combustion engine by the intermittent stop control until the temperature increase control is completed. The motoring control drives the output shaft of the internal combustion engine by the motor-generator, thereby forcibly rotating the internal combustion engine.
    Type: Grant
    Filed: November 19, 2019
    Date of Patent: September 13, 2022
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Shunichi Hara, Ryuta Teraya, Daigo Ando
  • Publication number: 20200223426
    Abstract: A controller includes an engine controlling section and a motor-generator controlling section. The controller is configured to use the engine controlling section and the motor-generator controlling section to execute an intermittent stop control, a temperature increase control, an intermittent stop prohibition control, and a motoring control. The intermittent stop control automatically stops and restarts operation of an internal combustion engine. The temperature increase control increases the temperature of a filter in the exhaust passage to a temperature at which PM can be burned. The intermittent stop prohibition control prohibits stop of the operation of the internal combustion engine by the intermittent stop control until the temperature increase control is completed. The motoring control drives the output shaft of the internal combustion engine by the motor-generator, thereby forcibly rotating the internal combustion engine.
    Type: Application
    Filed: November 19, 2019
    Publication date: July 16, 2020
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Shunichi HARA, Ryuta TERAYA, Daigo ANDO
  • Patent number: 10704481
    Abstract: An internal combustion engine includes a filter, which is configured to trap particulate matter in exhaust gas, an EGR passage, which connects a section of an exhaust passage that is upstream of the filter to an intake passage, and an EGR valve, which is configured to adjust a cross-sectional flow area of the EGR passage. A controller for the internal combustion engine includes processing circuitry, which is configured to execute a limiting process of limiting an opening degree of the EGR valve such that the opening degree is likely to decrease when an amount of the particulate matter trapped by the filter is great as compared to when the amount is small.
    Type: Grant
    Filed: October 10, 2018
    Date of Patent: July 7, 2020
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Ryuta Teraya
  • Publication number: 20190120154
    Abstract: An internal combustion engine includes a filter, which is configured to trap particulate matter in exhaust gas, an EGR passage, which connects a section of an exhaust passage that is upstream of the filter to an intake passage, and an EGR valve, which is configured to adjust a cross-sectional flow area of the EGR passage. A controller for the internal combustion engine includes processing circuitry, which is configured to execute a limiting process of limiting an opening degree of the EGR valve such that the opening degree is likely to decrease when an amount of the particulate matter trapped by the filter is great as compared to when the amount is small.
    Type: Application
    Filed: October 10, 2018
    Publication date: April 25, 2019
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Ryuta TERAYA
  • Patent number: 10065629
    Abstract: A hybrid vehicle includes an internal combustion engine, an electrical storage device, a rotary electric machine, and a controller. The hybrid vehicle travels in a selected one of a charge sustaining mode and a charge depleting mode. Switching from the charge depleting mode to the charge sustaining mode is controlled such that a first state of charge is higher than a second state of charge. In the first state of charge, the controller switches from the charge depleting mode to the charge sustaining mode at the time when operation characteristic of the intake valve is unchangeable to a desired operation characteristic. In the second state of charge there is switching from the charge depleting mode to the charge sustaining mode at the time when the operation characteristic of the intake valve is changeable to a desired operation characteristic.
    Type: Grant
    Filed: November 3, 2014
    Date of Patent: September 4, 2018
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Ryuta Teraya, Toshikazu Kato, Yoshikazu Asami
  • Patent number: 9925885
    Abstract: A control system for a vehicle including an engine, an electrical storage unit and a generator driven by the engine, the control system includes a socket and a controller. The socket is configured to supply electric power from the generator or the electrical storage unit to a device outside the vehicle in a travel stop state. The controller stops the engine when a preset condition is satisfied. The controller sets a first range and a second range in which the condition is satisfied. The first range is the range in a case where electric power is supplied to the device outside the vehicle and the second range is the range in another case. The first range is narrower than the second range.
    Type: Grant
    Filed: November 14, 2013
    Date of Patent: March 27, 2018
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Ryuta Teraya
  • Patent number: 9909512
    Abstract: A hybrid vehicle includes a controller that executes catalyst warm-up control for warming up a catalyst, including first control that operates an internal combustion engine at a first operating point, and second control, after executing the first control, that operates the engine at a second operating point irrespective of driving force required to propel the vehicle. Engine output at the second point is larger than engine output at the first point. Ignition timing of the engine at the time when the first control is executed is controlled to a retarded side with respect to an ignition timing of the engine at the time when the second control is executed. When the second control is executed, at least one of a valve lift of an intake valve and a valve operating angle of the intake valve increases as charging of an electrical storage device is more limited.
    Type: Grant
    Filed: February 25, 2015
    Date of Patent: March 6, 2018
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Yoshikazu Asami, Toshikazu Kato, Ryuta Teraya
  • Patent number: 9889842
    Abstract: A controller of a hybrid vehicle is configured to operate the internal combustion engine with ignition timing of the internal combustion engine during the execution of the first warm-up control for operating the internal combustion engine at a first operating point further on a retard side than ignition timing of the internal combustion engine during the execution of the second warm-up control for operating the internal combustion engine at a second operating point, regardless of the driving force required for traveling after the execution of the first warm up control. The controller is configured to set the output of the internal combustion engine and the operation characteristic of the intake valve in accordance with a predetermined characteristic relationship in which the output of the internal combustion engine and the operation characteristic of the intake valve correspond to each other during the execution of the second warm-up control.
    Type: Grant
    Filed: March 25, 2015
    Date of Patent: February 13, 2018
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Yoshikazu Asami, Toshikazu Kato, Ryuta Teraya
  • Patent number: 9815452
    Abstract: A hybrid vehicle includes an electric motor, an internal combustion engine, an exhaust emission control device and a controller. The controller is configured to execute catalyst warm-up control for warming up a catalyst of the exhaust emission control device. The catalyst warm-up control includes first control and second control. The first control is control for operating the internal combustion engine at a first operating point. The second control is control for, after the first control is executed, operating the internal combustion engine at a second operating point irrespective of a driving force that is required to propel the hybrid vehicle. An output of the internal combustion engine at the second operating point is larger than an output of the internal combustion engine at the first operating point.
    Type: Grant
    Filed: December 10, 2014
    Date of Patent: November 14, 2017
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Ryuta Teraya, Toshikazu Kato, Yoshikazu Asami
  • Patent number: 9789865
    Abstract: The hybrid vehicle includes an internal combustion engine, a rotary electric machine, an electrical storage device and a controller. The controller is configured to execute output control. An opening degree of the throttle valve is controlled in the output control such that, when a temperature of the electrical storage device is lower than a predetermined temperature, the output of the internal combustion engine is reduced below a predetermined output. The controller is further configured to control the variable valve actuating device such that at least one of a valve lift or valve operating angle of the intake valve at the time when the output control is executed is larger than the corresponding at least one of the valve lift or valve operating angle of the intake valve at the time when the output control is not executed.
    Type: Grant
    Filed: December 3, 2014
    Date of Patent: October 17, 2017
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Toshikazu Kato, Ryuta Teraya, Yoshikazu Asami
  • Publication number: 20170282893
    Abstract: A hybrid vehicle includes an internal combustion engine, an electrical storage device, a rotary electric machine, and a controller. The internal combustion engine includes a variable valve actuating device. The variable valve actuating device is configured to change an operation characteristic of an intake valve. The electrical storage device is configured to be charged. The rotary electric machine is configured to generate driving force for propelling the hybrid vehicle by using electric power that is supplied from the electrical storage device. The controller is configured to cause the hybrid vehicle to travel in a selected one of a charge sustaining mode and a charge depleting mode. The charge sustaining mode is a mode in which a state of charge of the electrical storage device is kept within a predetermined range. The charge depleting mode is a mode in which consumption of the state of charge is given a higher priority as compared to the charge sustaining mode.
    Type: Application
    Filed: November 3, 2014
    Publication date: October 5, 2017
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Ryuta TERAYA, Toshikazu KATO, Yoshikazu ASAMI
  • Patent number: 9758162
    Abstract: A hybrid vehicle includes an internal combustion engine and a rotary electric machine. The internal combustion engine includes a variable valve actuating device configured to change an operation characteristic of an intake valve. The rotary electric machine is configured to generate driving force for propelling the hybrid vehicle. A controller for the hybrid vehicle includes a traveling control unit and a valve actuation control unit. The traveling control unit executes traveling control for causing the hybrid vehicle to travel by using the driving force of the rotary electric machine while stopping the internal combustion engine. The traveling control unit starts up the internal combustion engine while executing the traveling control. The valve actuation control unit controls the variable valve actuating device.
    Type: Grant
    Filed: September 17, 2014
    Date of Patent: September 12, 2017
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Toshikazu Kato, Ryuta Teraya, Yoshikazu Asami
  • Patent number: 9732680
    Abstract: A control device for a vehicle including an engine, the engine including an electric VVT mechanism, the electric VVT mechanism that changes a valve timing of at least either one of an intake valve and an exhaust valve, the control device includes an ECU. The ECU is configured to: perform a crankshaft stop position control to control a rotation stop position of a crankshaft during a stop process of stopping the engine, such that a valve opening degree in which at least either one of a first gap between the intake valve and the corresponding valve seat and a second gap between the exhaust valve and the corresponding valve seat is fully closed or becomes a predetermined gap or more is set as a target valve opening degree; and operate the electric VVT mechanism until the valve opening degree reaches the target valve opening degree, when the engine stops.
    Type: Grant
    Filed: February 9, 2016
    Date of Patent: August 15, 2017
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Ryuta Teraya
  • Patent number: 9725085
    Abstract: An engine has a variable valve actuation device for controlling an actuation characteristic of an intake valve that is an amount of lifting the intake valve and/or a working angle on the intake valve. When the intake valve, having the actuation characteristic (or lifted in an amount and/or worked by a working angle), as controlled by the variable valve actuation device, has the actuation characteristic fixed (YES in S120), a range applied to set therewithin an output that the engine is required to provide is limited to be narrower and a power storage device's controlled target SOC is raised to be higher (S150, S160, S170) than when said actuation characteristic is not fixed (NO in S120).
    Type: Grant
    Filed: December 17, 2014
    Date of Patent: August 8, 2017
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Ryuta Teraya, Toshikazu Kato, Yoshikazu Asami
  • Patent number: 9718372
    Abstract: An ECU sets a voltage of an inverter side in an external supply mode to be less than a voltage of the inverter side when a first MG supplies the electric power equal to the electric power in the external supply mode in a traveling generation mode.
    Type: Grant
    Filed: October 2, 2013
    Date of Patent: August 1, 2017
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Ryuta Teraya
  • Patent number: 9718453
    Abstract: A first heater heats a vehicle compartment by using cooling water of the internal combustion engine. A second heater heats the vehicle compartment by using electrical power supplied by the electrical storage device. The controller during driving of the internal combustion engine, when a temperature of the cooling water is equal to or higher than a reference temperature, controls the internal combustion engine to stop; when the second heater is operated during driving of the internal combustion engine, when a state quantity indicating a state of charge of the electrical storage device is equal to or higher than a threshold, controls the second heater such that an amount of heat generation of the second heater is higher than that generated when the state quantity is less than the threshold; and sets the reference temperature to be low as compared to when the state quantity is less than the threshold.
    Type: Grant
    Filed: December 18, 2014
    Date of Patent: August 1, 2017
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Ryuta Teraya
  • Publication number: 20170120894
    Abstract: A controller of a hybrid vehicle is configured to operate the internal combustion engine with ignition timing of the internal combustion engine during the execution of the first warm-up control for operating the internal combustion engine at a first operating point further on a retard side than ignition timing of the internal combustion engine during the execution of the second warm-up control for operating the internal combustion engine at a second operating point, regardless of the driving force required for traveling after the execution of the first warm up control. The controller is configured to set the output of the internal combustion engine and the operation characteristic of the intake valve in accordance with a predetermined characteristic relationship in which the output of the internal combustion engine and the operation characteristic of the intake valve correspond to each other during the execution of the second warm-up control.
    Type: Application
    Filed: March 25, 2015
    Publication date: May 4, 2017
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yoshikazu ASAMI, Toshikazu KATO, Ryuta TERAYA
  • Publication number: 20170009667
    Abstract: A hybrid vehicle includes an internal combustion engine, an electrical storage device, an electric motor, an exhaust emission control device, and a controller. The internal combustion engine includes a variable valve actuating device. The variable valve actuating device is configured to change an operation characteristic (IN1a, IN2a, IN3a) of an intake valve. The electrical storage device is configured to store electric power. The electric power is generated by using the internal combustion engine. The electric motor is configured to generate a driving force of the hybrid vehicle by using the electric power stored in the electrical storage device. The exhaust emission control device is configured to purify exhaust gas from the internal combustion engine with the use of a catalyst. The controller is configured to execute catalyst warm-up control. The catalyst warm-up control is control for warming up the catalyst of the exhaust emission control device.
    Type: Application
    Filed: February 25, 2015
    Publication date: January 12, 2017
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yoshikazu ASAMI, Toshikazu KATO, Ryuta TERAYA
  • Publication number: 20170001625
    Abstract: The hybrid vehicle includes an internal combustion engine, a rotary electric machine, an electrical storage device and a controller. The controller is configured to execute output control. An opening degree of the throttle valve is controlled in the output control such that, when a temperature of the electrical storage device is lower than a predetermined temperature, the output of the internal combustion engine is reduced below a predetermined output. The controller is further configured to control the variable valve actuating device such that at least one of a valve lift or valve operating angle of the intake valve at the time when the output control is executed is larger than the corresponding at least one of the valve lift or valve operating angle of the intake valve at the time when the output control is not executed.
    Type: Application
    Filed: December 3, 2014
    Publication date: January 5, 2017
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Toshikazu KATO, Ryuta TERAYA, Yoshikazu ASAMI
  • Patent number: 9527501
    Abstract: A control device is configured to control an engine to be started and stopped such that when a hybrid vehicle is required to output a vehicular required power smaller than an engine starting threshold value the control device operates to stop the engine and use only a motor generator to cause the vehicle to travel and when the vehicular required power exceeds the threshold value the control device operates to start the engine and use both the engine and the motor generator to cause the vehicle to travel. The engine starting threshold value is set to be higher when at least one of an amount of lifting the intake valve and a working angle on the intake valve controlled by a VVL device provided to the engine is small than when at least one of the amount and the angle is large.
    Type: Grant
    Filed: October 30, 2014
    Date of Patent: December 27, 2016
    Assignee: Toyoda Jidosha Kabushiki Kaisha
    Inventors: Yoshikazu Asami, Toshikazu Kato, Ryuta Teraya